The AirTAC GFR300C10MLNWT AirTAC Filter Regulator NPT3/8 5 um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR300C10MLNWT is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built around a 3/8 in NPT port, a 5 um filter element (the finer of the two published grades) and a manual drain, so condensate is released by opening the drain rather than automatically. The regulator is the low-pressure type, no gauge is fitted, and the bowl is metal. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part in the GFR300 size family, which spans sizes 200 to 600 with port options from 1/8 in to 1 in and PT, G or NPT threads. Filter grade, drain type, gauge and scale, and reverse/check valve are all orderable options. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any other datasheet figure for your application before ordering.
| Model | GFR300C10MLNWT AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Filtered, regulated air to power clamp and fixture cylinders on a CNC or milling cell, where the 5 um element helps keep water and fine particulate out of directional valves and clamp cylinders.
Supplying spray guns or coating heads that run at lower set pressures, combining 5 um filtration with low-pressure regulation in one body at the point of use.
Points of use where a metal bowl is preferred over polycarbonate - for example cells with solvent splash or hot spatter nearby - while still filtering and regulating the air supply.
Size step is the first choice: 300 sits in the middle of the 200/300/400/600 range, and the 3/8 in NPT port should match your supply line - step up or down a size if your demand is larger or smaller. This unit pairs a 5 um element (code W) with a manual drain; choose the automatic or differential-pressure drain instead if you cannot rely on periodic manual blowdown. The regulator is the low-pressure type, so confirm its adjustment range against your set pressure with us before ordering. No gauge is fitted (code N); gauge variants with MPa, psi or bar scales exist if you need a local reading. PT is the standard thread and G/NPT are order options; a bracket is included with this model. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing from the datasheet.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote a number on the page. Send us your line pressure, downstream demand and port size and we will confirm the flow from the datasheet before you order.
No. The N in the code means no gauge is supplied, which suits panels where the reading is taken elsewhere. If you want local indication, GFR300 variants with an embedded square gauge or an external round gauge in MPa, psi or bar scales can be ordered.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.